by http://blogs.msdn.com/b/vcblog/archive/2015/06/02/constexpr-complete-for-vs-2015-rtm-c-11-compiler-c-17-stl.aspx, we will able to define MOZ_HAVE_CXX11_CONSTEXPR even if VS2015.

We cannot compile HTMLTrackElement.cpp using constexpr. Filed as https://connect.microsoft.com/VisualStudio/feedback/details/1611942/constexpr-causes-internal-compiler-error

AFAICT, this doesn't block enabling VS2015, so changing dependencies accordingly. (In reply to Makoto Kato [:m_kato] from comment #1) > We cannot compile HTMLTrackElement.cpp using constexpr. > > Filed as > https://connect.microsoft.com/VisualStudio/feedback/details/1611942/ > constexpr-causes-internal-compiler-error Until that bug is fixed, we can either just not define MOZ_HAVE_CXX11_CONSTEXPR, or temporarily change the HTMLTrackElement stuff to avoid constexpr when building with Visual Studio.

Bug 1189655 - Define MOZ_HAVE_CXX11_CONSTEXPR on VS2015 or later. r?waldo

(In reply to Brian Smith (:briansmith, :bsmith, use NEEDINFO?) from comment #2) > Until that bug is fixed, we can either just not define > MOZ_HAVE_CXX11_CONSTEXPR, or temporarily change the HTMLTrackElement stuff > to avoid constexpr when building with Visual Studio. We need to do neither one. That internal error is easy to workaround.

Comment on attachment 8650403 [details] MozReview Request: Bug 1189655 - Define MOZ_HAVE_CXX11_CONSTEXPR on VS2015 or later. r?waldo https://reviewboard.mozilla.org/r/16623/#review14935 Ship It!

url: https://hg.mozilla.org/integration/mozilla-inbound/rev/a5420073ea387c4c74814beca323af365b793e4c changeset: a5420073ea387c4c74814beca323af365b793e4c user: Xidorn Quan <quanxunzhen@gmail.com> date: Fri Aug 21 09:17:18 2015 +1000 description: Bug 1189655 - Define MOZ_HAVE_CXX11_CONSTEXPR on VS2015 or later. r=Waldo